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188847 Rhipeus (2006 FT9)
Classification: Jupiter Trojan          SPK-ID: 2188847
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0633213869018963 1.7913e-07  
a 5.18531161077876 5.9748e-07 AU
q 4.856970488065743 1.3584e-06 AU
i 7.099094283276143 1.7303e-05 deg
node 232.8787893466504 0.00012627 deg
peri 264.2568045414569 0.00023562 deg
M 282.1581496546912 0.00021952 deg
tp 2457933.048370388058
(2017-Jun-28.54837039)
0.0027551 JED
period 4312.813889321081
11.81
0.00074542
2.041e-06
d
yr
n .08347218526897085 1.4427e-08 deg/d
Q 5.513652733491776 6.3532e-07 AU
  Orbit Determination Parameters
   # obs. used (total)      96  
   data-arc span      3983 days (10.90 yr)  
   first obs. used      2003-11-29  
   last obs. used      2014-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56543  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 17:19:40  

Additional Information
 Earth MOID = 3.88041 AU 
 T_jup = 2.981 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.9 mag n/a MPO270799  

188847 Rhipeus           Discovered 2006 Mar. 23 by Calvin College at the Calvin-Rehoboth Observatory.
According to Virgil, Rhipeus died fighting alongside Aeneas in the fall of Troy. The poet says that Rhipeus was "the single most just man among the Trojans and the best preserver of fairness, but the gods thought otherwise". In the Paradiso, Dante places him in the sphere of Jupiter in the eye of the eagle.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080819/MPCPages.arcLast Updated: 2008-08-25
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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